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Forensic DNA

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https://www.readbyqxmd.com/read/28645082/local-populations-and-inaccuracies-determining-the-relevant-mitochondrial-haplotype-distributions-for-north-west-european-cats
#1
Monique Wesselink, Stijn Desmyter, Irene Kuiper
Typing of different portions of the feline mitochondrial control region has illustrated pronounced differences in haplotype distributions between cats from the Netherlands and other parts of the world. To gain a better understanding of the haplotype distribution of North West Continental Europe, 605bp of mitochondrial DNA was typed from randomly selected cats from the Netherlands (N=146), Belgium (N=64) and South West Germany (N=128). The genetic differences between these randomly sampled European populations correlate to the geographical distances, with the Dutch and the South West German populations furthest apart and the Belgian population as an intermediate (Fst values 0...
June 4, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28622802/rapid-multiplex-dna-amplification-on-an-inexpensive-microdevice-for-human-identification-via-short-tandem-repeat-analysis
#2
Jacquelyn A DuVall, Delphine Le Roux, Brandon L Thompson, Christopher Birch, Daniel A Nelson, Jingyi Li, Daniel L Mills, An-Chi Tsuei, Martin G Ensenberger, Cindy Sprecher, Douglas R Storts, Brian E Root, James P Landers
Forensic DNA analysis requires several steps, including DNA extraction, PCR amplification, and separation of PCR fragments. Intuitively, there are numerous situations where it would be beneficial to speed up the overall DNA analysis process; in this work, we focus on the most time-consuming component in the analysis pipeline, namely the polymerase chain reaction (PCR). Primers were specially designed to target 10 human genomic loci, all yielding amplicons shorter than 350 bases, for ease of downstream integration with on-board microchip electrophoresis...
August 8, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28613042/allele-frequencies-of-15-str-loci-in-bosnian-and-herzegovinian-population
#3
Amela Pilav, Naris Pojskić, Anesa Ahatović, Mirela Džehverović, Jasmina Čakar, Damir Marjanović
AIM: To determine newest the most accurate allele frequencies for 15 short tandem repeat (STR) loci in the Bosnian and Herzegovinian population, calculate statistical parameters, and compare them with the relevant data for seven neighboring populations. METHODS: Genomic DNA was obtained from buccal swabs of 1000 unrelated individuals from all regions of Bosnia and Herzegovina. Genotyping was performed using PowerPlex® 16 System to obtain allele frequencies for 15 polymorphic STR loci including D3S1358, TH01, D21S11, D18S51, Penta E, D5S818, D13S317, D7S820, D16S539, CSF1PO, Penta D, vWA, D8S1179, TPOX, and FGA...
June 14, 2017: Croatian Medical Journal
https://www.readbyqxmd.com/read/28613039/sex-estimation-standards-for-medieval-and-contemporary-croats
#4
Željana Bašić, Ivana Kružić, Ivan Jerković, Deny Anđelinović, Šimun Anđelinović
AIM: To develop discriminant functions for sex estimation on medieval Croatian population and test their application on contemporary Croatian population. METHODS: From a total of 519 skeletons, we chose 84 adult excellently preserved skeletons free of antemortem or postmortem changes and took all standard measurements. Sex was estimated/determined using standard anthropological procedures and ancient DNA (amelogenin analysis) where pelvis was insufficiently preserved or where sex morphological indicators were not consistent...
June 14, 2017: Croatian Medical Journal
https://www.readbyqxmd.com/read/28613037/results-of-a-collaborative-study-on-dna-identification-of-aged-bone-samples
#5
Daniel Vanek, Bruce Budowle, Jitka Dubska-Votrubova, Angie Ambers, Jan Frolik, Martin Pospisek, Ahmed Anwar Al Afeefi, Khalid Ismaeil Al Hosani, Marie Allen, Khudooma Saeed Al Naimi, Dina Al Salafi, Wafa Ali Rashid Al Tayyari, Wendy Arguetaa, Michel Bottinelli, Magdalena M Bus, Jan Cemper-Kiesslich, Olivier Cepil, Greet De Cock, Stijn Desmyter, Hamid El Amri, Hicham El Ossmani, Ruth Galdies, Sebastian Grün, Francois Guidet, Anna Hoefges, Cristian Bogdan Iancu, Petra Lotz, Alessandro Maresca, Marion Nagy, Jindrich Novotny, Hajar Rachid, Jessica Rothe, Marguerethe Stenersen, Mishel Stephenson, Alain Stevanovitch, Juliane Strien, Denilce R Sumita, Joanna Vella, Judith Zander
AIM: A collaborative exercise with several institutes was organized by the Forensic DNA Service (FDNAS) and the Institute of the Legal Medicine, 2nd Faculty of Medicine, Charles University in Prague, Czech Republic, with the aim to test performance of different laboratories carrying out DNA analysis of relatively old bone samples. METHODS: Eighteen laboratories participating in the collaborative exercise were asked to perform DNA typing of two samples of bone powder...
June 14, 2017: Croatian Medical Journal
https://www.readbyqxmd.com/read/28608145/laundry-in-a-washing-machine-as-a-mediator-of-secondary-and-tertiary-dna-transfer
#6
Lev Voskoboinik, Merav Amiel, Ayeleth Reshef, Ron Gafny, Mark Barash
The aim of this work was to investigate the possibility of secondary and tertiary DNA transfer during laundry. The modes of transfer tested were mixed and separate laundry of worn and unworn garments in household and public washing machines. In addition, the possibility of a background DNA carry-over from a washing machine's drum was investigated. In the mixed (worn and unworn garments washed together) laundry experiment, 22% of samples from new unworn socks with no traceable DNA prior to experiment produced DNA profiles post-laundry...
June 12, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28606337/patterns-of-exchange-of-forensic-dna-data-in-the-european-union-through-the-pr%C3%A3-m-system
#7
Filipe Santos, Helena Machado
This paper presents a study of the 5-year operation (2011-2015) of the transnational exchange of forensic DNA data between Member States of the European Union (EU) for the purpose of combating cross-border crime and terrorism within the so-called Prüm system. This first systematisation of the full official statistical dataset provides an overall assessment of the match figures and patterns of operation of the Prüm system for DNA exchange. These figures and patterns are analysed in terms of the differentiated contributions by participating EU Member States...
July 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28605650/body-fluid-prediction-from-microbial-patterns-for-forensic-application
#8
Eirik Nataas Hanssen, Ekaterina Avershina, Knut Rudi, Peter Gill, Lars Snipen
The association of a DNA profile with a certain body fluid can be of essential importance in the evaluation of biological evidence. Several alternative methods for body fluid prediction have been proposed to improve the currently used presumptive tests. Most of them measure gene expression. Here we present a novel approach based on microbial taxonomic profiles obtained by standard 16S rRNA gene sequencing. We used saliva deposited on skin as a forensically relevant study model, but the same principle can be applied for predicting other bacteria rich body fluids...
June 1, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28605649/direct-str-typing-from-presumptively-tested-and-untreated-body-fluids
#9
Phuvadol Thanakiatkrai, Krittika Raham, Jintana Pradutkanchana, Sujettana Sotthibandhu, Thitika Kitpipit
Body fluids provide key pieces of information for a forensic investigation. However, sometimes only a small amount of body fluids is found and/or DNA are also degraded by environmental factors at the crime scene. In extreme cases, a forensic analyst may have to decide whether to perform a presumptive test on the stains or proceed straightaway to DNA profiling, which could be wasteful for non-biological stains. Additionally, due to the inefficient DNA extraction process, the amount of DNA may not be enough for STR typing, especially if parts of the evidence had been subjected to presumptive testing...
June 6, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28601979/young-people-s-awareness-on-biobanking-and-dna-profiling-results-of-a-questionnaire-administered-to-italian-university-students
#10
Pamela Tozzo, Antonio Fassina, Luciana Caenazzo
Current policy approaches to social and ethical issues surrounding biobanks manifest lack of public information given by researchers and government, despite the evidence that Italian citizens are well informed about technical and other public perspectives of biotechnologies. For this reason, the focus of our survey was to interview our University's students on these aspects. The sample consisted of Padua University students (N = 959), who were administered a questionnaire comprising eight questions covering their knowledge about biobanks, their perception of the related benefits and risks, their willingness to donate samples to a biobank for research purposes, their attitude to having their own DNA profile included in a forensic DNA database, and the reasons behind their answers...
December 2017: Life Sciences, Society and Policy
https://www.readbyqxmd.com/read/28600257/search-for-more-effective-microsatellite-markers-for-forensics-with-next-generation-sequencing
#11
Bowen Tan, Zicheng Zhao, Zhe Zhang, Shengbin Li, Shuai Cheng Li
Published by the Combined DNA Index System (CODIS) program of the Federal Bureau of Investigation (FBI) in 1997, the 13 core short tandem repeat (STR) loci are widely adopted as genetic markers in forensic applications, e.g., identity testing and paternity testing. However, these loci may be biased and suffer from reduced sensitivities towards specific population groups. In addition, the rapid growth of entries in forensic databases raises the chance of random hits, which can cause false recognitions of criminal suspects...
June 7, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28589259/molecular-identification-of-victim-species-and-its-sex-from-the-ash-a-case-of-burning-alive-leopard-panthera-pardus
#12
Vipin, Vinita Sharma, Sandeep Kumar Gupta
In a case of negative human-leopard (Panthera pardus) interaction, an animal was burnt alive in South Rajasthan, India. We identified the species and sex of the victim animal from the ash using forensic DNA analysis. We recovered three objects (half burnt clot, stone, and shrub twig) from the ash having suspected blood stains. We extracted DNA from these items and amplified a partial fragment of mitochondrial DNA cytochrome b and 12S RNA genes. The sequence generated from these amplicons suggested that the victim animal was a leopard...
June 6, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28587639/unravelling-mummies-cryptic-diversity-host-specificity-trophic-and-coevolutionary-interactions-in-psyllid-parasitoid-food-webs
#13
Aidan A G Hall, Martin J Steinbauer, Gary S Taylor, Scott N Johnson, James M Cook, Markus Riegler
BACKGROUND: Parasitoids are hyperdiverse and can contain morphologically and functionally cryptic species, making them challenging to study. Parasitoid speciation can arise from specialisation on niches or diverging hosts. However, which process dominates is unclear because cospeciation across multiple parasitoid and host species has rarely been tested. Host specificity and trophic interactions of the parasitoids of psyllids (Hemiptera) remain mostly unknown, but these factors are fundamentally important for understanding of species diversity, and have important applied implications for biological control...
June 6, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28585967/a-simple-and-highly-sensitive-spectroscopic-fluorescence-detection-system-for-multi-channel-plastic-microchip-electrophoresis-based-on-side-entry-laser-beam-zigzag-irradiation
#14
Takashi Anazawa, Yuichi Uchiho, Takahide Yokoi, George Chalkidis, Motohiro Yamazaki
A five-color fluorescence-detection system for eight-channel plastic-microchip electrophoresis was developed. In the eight channels (with effective electrophoretic lengths of 10 cm), single-stranded DNA fragments were separated (with single-base resolution up to 300 bases within 10 min), and seventeen-loci STR genotyping for forensic human identification was successfully demonstrated. In the system, a side-entry laser beam is passed through the eight channels (eight A channels), with alternately arrayed seven sacrificial channels (seven B channels), by a technique called "side-entry laser-beam zigzag irradiation...
June 6, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28577456/dna-decontamination-of-fingerprint-brushes
#15
Bianca Szkuta, Roland A H van Oorschot, Kaye N Ballantyne
Genetic profiling of DNA collected from fingerprints that have been exposed to various enhancement techniques is routine in many forensic laboratories. As a result of direct contact with fingermark residues during treatment, there is concern around the DNA contamination risk of dusting fingermarks with fingerprint brushes. Previous studies have demonstrated the potential for cross-contamination between evidentiary items through various mechanisms, highlighting the risk of using the same fingerprint brush to powder multiple surfaces within and between crime-scenes...
May 22, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28554784/dna-recovery-from-latent-fingermarks-treated-with-an-infrared-fluorescent-fingerprint-powder
#16
Abdulrahman Al Oleiwi, Imtiaz Hussain, Allyce McWhorter, Raul Sutton, Roberto S P King
The effect of the infrared fluorescent fingermark visualisation powder, fpNatural 1™, on the recovery of both the quantity and quality of touch DNA from fingerprints deposited on glass slides, was investigated using qPCR and STR typing. Four donors each deposited replicate marks, which were either left untreated (n=5) or treated by dusting with fpNatural 1™ (n=5). Each sample was swabbed using the double swab technique, before being extracted using the EZNA Forensic DNA kit and then DNA quantitated before being subjected to DNA profile analysis...
May 18, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28549545/developmental-and-internal-validation-of-a-novel-13-loci-str-multiplex-method-for-cannabis-sativa-dna-profiling
#17
Rachel Houston, Matthew Birck, Sheree Hughes-Stamm, David Gangitano
Marijuana (Cannabis sativa L.) is a plant cultivated and trafficked worldwide as a source of fiber (hemp), medicine, and intoxicant. The development of a validated method using molecular techniques such as short tandem repeats (STRs) could serve as an intelligence tool to link multiple cases by means of genetic individualization or association of cannabis samples. For this purpose, a 13 loci STR multiplex method was developed, optimized, and validated according to relevant ISFG and SWGDAM guidelines. The STR multiplex consists of 13 previously described C...
May 2017: Legal Medicine
https://www.readbyqxmd.com/read/28549541/mitochondrial-control-region-diversity-in-sindhi-ethnic-group-of-pakistan
#18
Memona Yasmin, Allah Rakha, Saadia Noreen, Zeenat Salahuddin
The entire mitochondrial DNA control region (nt 16024-576) of 88 unrelated individuals of Sindhi ethnic group residing in different parts of Sindh province of Pakistan was sequenced. Out of 66 different observed haplotypes 50 were unique and 16 were shared by more than one individual. Results showed admixture of mtDNA pool constituting the haplogroups derived mainly from South Asia (47.6%) and West Eurasian (35.7%) whereas the contribution of the African haplogroup was very small (2.4%). High values of genetic diversity (0...
May 2017: Legal Medicine
https://www.readbyqxmd.com/read/28544956/dna-commission-of-the-international-society-for-forensic-genetics-isfg-guidelines-on-the-use-of-x-strs-in-kinship-analysis
#19
Andreas O Tillmar, Daniel Kling, John M Butler, Walther Parson, Mechthild Prinz, Peter M Schneider, Thore Egeland, Leonor Gusmão
Forensic genetic laboratories perform an increasing amount of genetic analyses of the X chromosome, in particular to solve complex cases of kinship analysis. For some biological relationships X-chromosomal markers can be more informative than autosomal markers, and there are a large number of markers, methods and databases that have been described for forensic use. Due to their particular mode of inheritance, and their physical location on a single chromosome, some specific considerations are required when estimating the weight of evidence for X-chromosomal marker DNA data...
May 13, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28544375/proteomic-analysis-of-hair-shafts-from-monozygotic-twins-expression-profiles-and-genetically-variant-peptides
#20
Pei-Wen Wu, Katelyn E Mason, Blythe P Durbin-Johnson, Michelle Salemi, Brett S Phinney, David M Rocke, Glendon J Parker, Robert H Rice
Forensic association of hair shaft evidence with individuals is currently assessed by comparing mitochondrial DNA haplotypes of reference and casework samples, primarily for exclusionary purposes. Present work tests and validates more recent proteomic approaches to extract quantitative transcriptional and genetic information from hair samples of monozygotic twin pairs, which would be predicted to partition away from unrelated individuals if the datasets contain identifying information. Protein expression profiles and polymorphic, genetically variant hair peptides were generated from 10 pairs of monozygotic twins...
May 22, 2017: Proteomics
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